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(No Modem R. y1). SGOOD.

PRIMARY BATTERY.

Patented June 16, 1896.

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ANDREW BvGRANAM. PHUYULITHUWASHIN GTON. D C

UNITED STATES -ATENT OFFICE.

RICHARD P. OSGOOD, OF SALEM, MASSACHUSETTS, ASSIGNOR OF ONE-THIRD TO EDGAR E. RAMSDELL AND OSGOOD RAMSDELL, OF SAME PLACE.

PRIMARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 562,019, dated June 16, 1896.

Application filed September 30, 1895. Serial No. 564,143. (No model.)

To all whom, t may concern.-

Be it known that I, RICHARD P. Oseoon, of Salem, in the county of Essex, State of Massachusetts, have made certain new and useful Improvements in Primary Batteries, of which the following is a description'suficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had to the accompanyingdrawings, forming part of this specitication, in which- Figure l is a vertical transverse section of my improved battery; Fig. 2, a top plan view of the same, the cover being removed; Fig. 3, a sectional elevation illustrating details of construction.

Like letters and gures of reference indicate corresponding parts in the different iigures of the drawings.

My invention relates especially to improvements in primary batteries whereby the internal resistance may be reduced to a minimum, the copper solution will not deposit on the zinc, and there shall be practically no local action on the zinc.

The nature and operation of the improvement will be readily understood by those conversant with such matters from the following explanation.

In the drawings, A represents the containing-jar, which may be of any suitable construction. A iianged cover B closes the jar and rests on a rubber ring or washer C. On the under side of the cover there is a brass ring D, held bya binding-post g and a screw r, between which and the cover a copper washer j and rubber washerz' are interposed. This ring has two radially-projecting pins a', which are adapted to engage in-the angleslots g/ of a copper cup P, whereby the cup may be detachably suspended from the ring. A binding-post f has a long shank passing centrally through the porcelain coverB. This shank is screw-threaded. A Zinc cylinder E has a concaved top q, in the center of which there is a cylindrical throat s, into which the threaded shank of the post f turns and supports the zinc within the copper P. This top q forms a receptacle in which mercury e is disposed, whereby the Zinc may be amalgamated. The Zinc cylinder is flanged at its top at l5, and a cylinder T, of felt, encircles the zinc and is pendent from said flange. This felt cylinder forms a partition between the zinc and copper. Encircling the copper P there is a cylinder H, having a horizontal an-l nular foot or base lo, supported by legs m, which rest on the bottom of the containingjar. Crystals of blue vitriol w rest en this base. In the wall of the copper cup there are formed series of rectangular openings t. These openings are closed by felt rings r, which iit tightly over the cup.

In the use of my improvement, the battery being filled, the vitriol solution deposits on the outer face of the copper cup, and, percolating through the felt rings o, is caused by the felt cylinder to pass downward under said cylinder before it contacts with the zinc. The remaining copper in the solution is thus deposited on the inner face of the copper cup and the hydrogen is constantly replaced to decompose the copper sulfate as it comes through. Only clear acid thus reaches the zinc. The felt acts as a guard for the Zinc, and by effecting the result speciiied greatly reduces the internal resistance. By this construction there is no deposit of copper on the zinc, and hence there is no local action on said zinc. The solution when it reaches the zinc is substantially clear acid, as the felt gives the copper or polarized surface more time to decompose the vitriol before it reaches the Zinc. v

Having thus explained my invention, what I claim isl l. In an electric battery the combination of a containing-jar; a copper cup suspended therein and provided with openings closed by fibrous material; a positive pole suspended within said cup and a partition of felt between said poles substantially as set forth.

2. In an electric batterya containing-jar and cover in combination with a negative pole comprising a copper cup suspended from said cover and provided with openings covered by a iibrous material; a positive pole suspended within said cup; and a felt partition between said poles.

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3. In en eieetrc battery at containing-jar and cover in combination with :t stand, H, within said j ar; a copper jar pendent from said cover and provided with openings; a zinc cylinder pendent Within said jar; and zt fibrous partition between said copper and zinc substantialiy as specified.

4. In zt battery of the class described :t containing-jar and cover in combination with a, lnetztllicprojection on said cover connecting with abinding-post; a copper cup detachably secured to said projection and having openings closed bye fibrous material;l a zinc snspended from the cover within said cup; and

`and having openings closed by felt rings, o;

the zinc cylinder, E, suspended :from said cover and having the sunken head, q; and the felt partition between said zinc and cover.

RICHARD P. OSGOOD.

Titnessesz WILLIAM H. BARNARD, Henry KINGSLEY. 

